Turbo compressor

Abstract

A turbo compressor is provided which includes a motor having a stator with a rotor which rotates in the inside of the stator. A rotation shaft is press-fitted into the rotor and is integrally rotated with the rotor. A bearing is provided for supporting the rotation shaft of the motor. At least one impeller is attached to the rotation shaft of the motor and rotated therewith. A foil bearing including a plurality of foils is provided. First ends of the foils are respectively fitted into a multitude of engaging grooves defined on a circumferential inner surface of the stator, and second ends of the foils make contact with a circumferential outer surface of the rotor.

What is claimed is:  
     
       1. A turbo compressor comprising: 
       a motor having a stator with a rotor which rotates in the inside of the stator and a rotation shaft which is press-fitted into the rotor and integrally rotated with the rotor;  
       a bearing means for supporting the rotation shaft of the motor;  
       at least one impeller attached to the rotation shaft of the motor and rotated therewith; and  
       a foil bearing including a plurality of foils,  
       wherein first ends of the foils are respectively fitted into a multitude of engaging grooves defined on a circumferential inner surface of the stator, and second ends of the foils make contact with a circumferential outer surface of the rotor.